/Engine/Plugins/Online/OnlineServicesEOSGS/Source/Public/Online/OnlineErrorEOSGS.h
These are extern'd out of the namespace for some of the Catch API that can't see these operators if they are inside.
bool operator== ( const [UE::Online::FOnlineError](API\Plugins\OnlineServicesInterface\Online\FOnlineError) & OnlineError, EOS_EResult EosResult )